Aiea (Hawaiian: ʻAiea) is a census-designated place (CDP) located in the City and County of Honolulu, Hawaii, United States. As of the 2010 Census, the CDP had a total population of 9,338.
Aiea is located at 21°23′9″N 157°55′51″W / 21.38583°N 157.93083°W / 21.38583; -157.93083 (21.385900, −157.930927). According to the United States Census Bureau, the CDP has a total area of 1.8 square miles (4.7 km), of which, 1.6 square miles (4.1 km) of it is land and 0.1 square miles (0.26 km) of it (5.71%) is water.
Kamehameha Highway (Hawaii Route 99) divides most of Aiea from the shore of Pearl Harbor (mostly US government property), and the parallel major thoroughfare, Interstate H-1, further cuts the town’s commercial district into two distinct areas. These east-west routes (and other streets, such as Moanalua Road) connect Aiea to Pearl City, immediately adjacent on the west, and Halawa, adjacent on the east. The residential area known as Aiea Heights extends up the ridgeline above the town. The communities of Newtown Estates and Royal Summit are located at the western edge of Aiea near its border with Pearl City at Kaahumanu Street. Residents of the census-designated places (CDP) of Waimalu and Hālawa use Aiea in their postal address.
As of the census of 2000, there were 9,019 people, 2,758 households, and 2,258 families residing in the CDP. The population density was 5,463.5 people per square mile (2,110.5/km²). There were 2,831 housing units at an average density of 1,714.9 per square mile (662.5/km²). The racial makeup of the CDP was 16.25% White, 0.85% Black or African American, 0.14% Native American, 58.31% Asian, 5.08% Pacific Islander, 0.77% from other races, and 18.59% from two or more races. 5.47% of the population were Hispanic or Latino of any race.
There were 2,758 households out of which 27.3% had children under the age of 18 living with them, 63.0% were married couples living together, 13.3% had a female householder with no husband present, and 18.1% were non-families. 13.9% of all households were made up of individuals and 7.7% had someone living alone who was 65 years of age or older. The average household size was 3.24 and the average family size was 3.51.
In the CDP the population was spread out with 21.2% under the age of 18, 6.4% from 18 to 24, 27.6% from 25 to 44, 23.1% from 45 to 64, and 21.7% who were 65 years of age or older. The median age was 42 years. For every 100 females there were 96.3 males. For every 100 females age 18 and over, there were 96.0 males.
The median income for a household in the CDP was $71,155, and the median income for a family was $75,992. Males had a median income of $41,384 versus $32,394 for females. The per capita income for the CDP was $25,111. 4.6% of the population and 3.4% of families were below the poverty line. Out of the total population, 8.1% of those under the age of 18 and 4.0% of those 65 and older were living below the poverty line.
Aiea Hawaii neighborhoods include: Aiea, Halawa Heights, Kalaloa St, Kilinoe St, Koauka Loop, Mcgrew Loop, Moanalua, Newtown, Pearl Ridge, Royal Summit